Modular plunger structure sealed firmly

• Main Authors: WANG WEILIN, ZHANG LEI, GAO ZONGQI, ZHU ZEJUN, SUN YANDONG, ZHANG FANGYUAN, XIAO PING, DU WEIXUAN, CHENG ZHENGQUAN, ZHANG XUECHAO, ZHOU NA, TANG SHUKAI, JIANG SHUTING
• Format: Patent
• Language: English
• Published: 14.10.2015
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model provides a modular plunger structure sealed firmly, including floating flexible sealing assembly and internal flow passageway assembly, internal flow passageway assembly includes that flowing back passageway, internal flow core barrel, closed valve that top -down connected gradually are vice, floating flexible sealing assembly sets up on the outer wall of internal flow core barrel. Floating flexible sealing overall composition is outer main seal ring and the vice sealing ring two parts of inlayer, and vice sealing ring is installed at the internal flow core barrel outsidely, and main seal annular sleeved adorns in vice sealing ring outsidely, and two sealing rings constitute the plunger seal jointly. The utility model discloses make the oil -well pump plunger possess functions such as the self -adaptation is sealed, local micro deformation, the reinforcing plunger is to the adaptability of crooked pump barrel, and avoiding under plunger and the pump barrel yin gaowen swelling capacity, inconsistent and the working property of oil -well pump under inclined shaft section, horizontal segment and high temperature operating mode is embraced, is improved to the card.